电能表是用来测量 的仪表。小明家的电能表上的一些技术参数如下

电能表是用来测量           的仪表。小明家的电能表上的一些技术参数如下表,由表可知:小明家的电能表的额定电压是     ;持续工作的最大电流是     ;允许在短时间内通过的最大电流是     ;电能表的转盘第转一,接其后面的用电器消耗的电能是     J

单相电能表技术参数

电压

220V

电流规格

1030A

频率

50Hz

每千瓦时转数

3000R/kWh

答案

电功 220V 10A 30A 1200

相关题目

 I like to__________my bike__________the weekends. A. take; in B. catch; at C
 I like to__________my bike__________the weekends. A. take; in B. catch; at C. live; on D. ride; on
已知是关于的函数,函数图象如图所示,则当>0时,自变量
已知是关于的函数,函数图象如图所示,则当>0时,自变量的取值范围是(      ) A.x<0     B.-1<x<1或x>2     C.x>-1   D.x<-1或1<x<2   
Speaking of all the songs he has written, I think this is probably his _______ o
Speaking of all the songs he has written, I think this is probably his _______ one. A. better-known      B. well-known         C. best-known         D. most-known
设函数f(x)=x-lnx(x>0),则y=f(x)( ) (A)在区间(,1),(1,e)内
设函数f(x)=x-lnx(x>0),则y=f(x)( ) (A)在区间(,1),(1,e)内均有零点 (B)在区间(,1),(1,e)内均无零点 (C)在区间(,1)内有零点,在区间(1,e)内无零点 (
回家去问妈妈    毕淑敏 ①那一年游敦煌回来,兴奋地同
回家去问妈妈    毕淑敏 ①那一年游敦煌回来,兴奋地同妈妈谈起戈壁的黄沙和祁连的雪峰。说到丝绸之路上僻远的安西,哈密瓜汁甜得把嘴唇粘在
如图所示电路中,电源电压保持不变,闭合开关S后,将滑动
如图所示电路中,电源电压保持不变,闭合开关S后,将滑动变阻器R2的滑片P向右移动,在此过程中: A.电流表A示数变大,电压表V2示数变小   B.电
Every boy and every girl ______ that each day and each hour brings ______ duty.
Every boy and every girl ______ that each day and each hour brings ______ duty. A.know;their  B.knows;their C.knows;its   D.know;its  
—Do you have the New Chinese-English Dictionary?        —Yes, but no m
—Do you have the New Chinese-English Dictionary?        —Yes, but no more than one copy. Would you like to take            ?        A.some B.them C.it      D.on

最新题目